The digestible energy, metabolizable energy, and net energy content of dietary fat sources in thirteen- and fifty-kilogram pigs
The digestible energy, metabolizable energy, and net energy content of dietary fat sources in thirteen- and fifty-kilogram pigs
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DOI：
10.2527/jas.2017.1824
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发表时间：
2017-09-01
影响因子：
3.3
通讯作者：
Patience, J. F.
中科院分区：
文献类型：
--
作者：
Kellner, T. A.;Patience, J. F.
目的是确定多种膳食脂肪来源的能量浓度，并根据这些数据建立回归方程来解释基于化学成分的差异。对总共 120 只 Genetiporc 6.0 x Genetiporc F25（PIC, Inc., Hendersonville, TN）单独饲养的小猪进行了为期 56 天的研究。这些阉猪（初始体重为 9.9 +/- 0.6 kg）被随机分配到 15 种饮食治疗中的 1 种。每个实验饮食包括 95% 的玉米-豆粕基础饮食加上 5% 的玉米淀粉或 14 种膳食脂肪来源中的一种。选择 14 种膳食脂肪来源（动植物混合物、菜籽油、精选白色油脂来源 A、精选白色油脂来源 B、椰子油、玉米油来源 A、玉米油来源 B、鱼油、亚麻籽油、棕榈油、家禽脂肪、大豆油来源 A、大豆油来源 B 和牛脂）以提供多样化且稳定的不饱和脂肪酸：SFA 比率（U:S）。从第0天到第10天以及从第46天到第56天对猪进行限制饲喂实验日粮，为第7天到第10天（13公斤体重）和第53天到56天（50公斤体重）的粪便收集提供7天的适应。在体重为 13 kg 时，14 个来源的平均能量含量为 8.42 Mcal DE/kg、8.26 Mcal ME/kg 和 7.27 Mcal NE/kg。在50公斤体重时，平均能量含量为8.45麦卡DE/kg、8.28麦卡ME/kg和7.29麦卡NE/kg。体重为 13 kg 时，膳食脂肪 DE 含量的变化可通过以下公式解释：DE (Mcal/kg) = 9.363 + [0.097 x (FFA, %)] - [0.016 x omega-6:omega-3 脂肪酸比例] - [1.240 x (花生酸, %)] - [5.054 x (不溶性杂质, %)] + [0.014 x (棕榈酸)酸，%）]（P = 0.008，R-2 = 0.82）。体重为 50 kg 时，膳食脂肪 DE 含量的变化由 DE (Mcal/kg) = 8.357 + [0.189 x U:S] - [0.195 x (FFA, %)] - [6.768 x (山萮酸, %)] + [0.024 x (PUFA, %)] 解释（P = 0.002，R-2 = 0.81）。总之，膳食脂肪的化学成分在很大程度上解释了体重为 13 公斤和 50 公斤的膳食脂肪来源的能量含量变化。
The objective was to determine the energy concentration of a diverse array of dietary fat sources and, from these data, develop regression equations that explain differences based on chemical composition. A total of 120 Genetiporc 6.0 x Genetiporc F25 (PIC, Inc., Hendersonville, TN) individually housed barrows were studied for 56 d. These barrows (initial BW of 9.9 +/- 0.6 kg) were randomly allotted to 1 of 15 dietary treatments. Each experimental diet included 95% of a corn-soybean meal basal diet plus 5% either corn starch or 1 of 14 dietary fat sources. The 14 dietary fat sources (animal-vegetable blend, canola oil, choice white grease source A, choice white grease source B, coconut oil, corn oil source A, corn oil source B, fish oil, flaxseed oil, palm oil, poultry fat, soybean oil source A, soybean oil source B, and tallow) were selected to provide a diverse and robust range of unsaturated fatty acid: SFA ratios (U:S). Pigs were limit-fed experimental diets from d 0 to 10 and from d 46 to 56, providing a 7-d adaption for fecal collection on d 7 to 10 (13 kg BW) and d 53 to 56 (50 kg BW). At 13 kg BW, the average energy content of the 14 sources was 8.42 Mcal DE/kg, 8.26 Mcal ME/kg, and 7.27 Mcal NE/kg. At 50 kg BW, the average energy content was 8.45 Mcal DE/kg, 8.28 Mcal ME/kg, and 7.29 Mcal NE/kg. At 13 kg BW, the variation of dietary fat DE content was explained by DE (Mcal/kg) = 9.363 + [0.097 x (FFA, %)] - [0.016 x omega-6: omega-3 fatty acids ratio] - [1.240 x (arachidic acid, %)] - [5.054 x (insoluble impurities, %)] + [0.014 x (palmitic acid, %)] (P = 0.008, R-2 = 0.82). At 50 kg BW, the variation of dietary fat DE content was explained by DE (Mcal/kg) = 8.357 + [0.189 x U:S] - [0.195 x (FFA, %)] - [6.768 x (behenic acid, %)] + [0.024 x (PUFA, %)] (P = 0.002, R-2 = 0.81). In summary, the chemical composition of dietary fat explained a large degree of the variation observed in the energy content of dietary fat sources at both 13 and 50 kg BW.